Layered Double Hydroxide Molded Body and Method for Manufacturing Same

Abstract

A method for producing a layered double hydroxide compact can achieve production thereof at a lower cost for a short time by simplifying a process for producing a layered double hydroxide compact, and also can maintain a desired shape. The method for producing a layered double hydroxide compact is characterized by having a synthesis step of synthesizing a layered double hydroxide, a forming step of holding the layered double hydroxide after the synthesis step to a holding material, and a drying step of drying the layered double hydroxide held to the holding material until the water content thereof becomes equal to or lower than 30%.

1 . A method for producing a layered double hydroxide compact, the method comprising:
 a synthesis step of synthesizing a layered double hydroxide;   a forming step of holding the layered double hydroxide after the synthesis step to a holding material; and   a drying step of drying the layered double hydroxide held to the holding material until a water content thereof becomes equal to or lower than 30%.   
     
     
         2 . The method for producing a layered double hydroxide compact according to  claim 1 , wherein the forming step is to hold the layered double hydroxide after the synthesis step to the holding material before the water content thereof becomes equal to or lower than 50%. 
     
     
         3 . The method for producing a layered double hydroxide compact according to  claim 1 , further comprising a moisture removal step of removing moisture by applying pressure to the layered double hydroxide until the water content thereof becomes equal to or lower than 70% before the drying step. 
     
     
         4 . The method for producing a layered double hydroxide compact according to  claim 3 , wherein the drying step is to dry the layered double hydroxide held to the holding material under conditions at which a temperature is equal to or higher than 90° C. and equal to or lower than 110° C., and a humidity is equal to or higher than 90%. 
     
     
         5 . The method for producing a layered double hydroxide compact according to  claim 1 , wherein the forming step is to separate the layered double hydroxide and moisture by filling a container-shaped holding material having a filtration material in at least part thereof with a suspension including the layered double hydroxide and using the filtration material. 
     
     
         6 . The method for producing a layered double hydroxide compact according to  claim 1 , wherein the forming step is to support the layered double hydroxide on a fibrous holding material. 
     
     
         7 . The method for producing a layered double hydroxide compact according to  claim 6 , wherein the holding material is an absorbent fiber or a water absorbent polymer. 
     
     
         8 . The method for producing a layered double hydroxide compact according to  claim 1 , the method further comprising a functional material mixing step of mixing the layered double hydroxide with a functional material having a predetermined function before the drying step. 
     
     
         9 . The method for producing a layered double hydroxide compact according to  claim 1 , further comprising a functional material mixing step of mixing a suspension including the layered double hydroxide created in the synthesis step with a functional material. 
     
     
         10 . A layered double hydroxide compact, comprising:
 a layered double hydroxide; and   a container-shaped holding material, which has a filtration material in at least part thereof and holds the layered double hydroxide.   
     
     
         11 . A layered double hydroxide compact, comprising:
 a layered double hydroxide; and   a holding material including an absorbent fiber or an absorbent polymer, which holds the layered double hydroxide.   
     
     
         12 . A layered double hydroxide compact, wherein the layered double hydroxide compact is produced by the production method according to  claim 1 . 
     
     
         13 . The method for producing a layered double hydroxide compact according to  claim 2 , wherein the forming step is to separate the layered double hydroxide and moisture by filling a container-shaped holding material having a filtration material in at least part thereof with a suspension including the layered double hydroxide and using the filtration material. 
     
     
         14 . The method for producing a layered double hydroxide compact according to  claim 2 , wherein the forming step is to support the layered double hydroxide on a fibrous holding material. 
     
     
         15 . The method for producing a layered double hydroxide compact according to  claim 14 , wherein the holding material is an absorbent fiber or a water absorbent polymer. 
     
     
         16 . The method for producing a layered double hydroxide compact according to  claim 2 , further comprising a functional material mixing step of mixing the layered double hydroxide with a functional material having a predetermined function before the drying step. 
     
     
         17 . The method for producing a layered double hydroxide compact according to  claim 2 , further comprising a functional material mixing step of mixing a suspension including the layered double hydroxide created in the synthesis step with a functional material. 
     
     
         18 . The method for producing a layered double hydroxide compact according to  claim 3 , wherein the forming step is to separate the layered double hydroxide and moisture by filling a container-shaped holding material having a filtration material in at least part thereof with a suspension including the layered double hydroxide and using the filtration material. 
     
     
         19 . The method for producing a layered double hydroxide compact according to  claim 3 , wherein the forming step is to support the layered double hydroxide on a fibrous holding material. 
     
     
         20 . The method for producing a layered double hydroxide compact according to  claim 19 , wherein the holding material is an absorbent fiber or a water absorbent polymer.